Nuprl - Proof: effect-rule1 1 2 2

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At: effect-rule1 1 2 2

1. Id
2. x : Id
3. y : Id
4. k : Knd
5. T : Type
6. A : Type
7. B : Type
8. f : A

A
9.

y = x
10. x : A

y : B

x:Id fp-> Type
11. k : T

k:Knd fp-> Type
12. s : State(x : A

y : B)
13. v : ma-valtype(k : T; k)
14. x : A

y : B(x)?Void = A
15. x : A

y : B(x)?Top = A

f(s(x),s(y),v)

x : A

y : B(x)?Void

By:	GenConcl (s(x) = z) THEN Try (Complete Auto)

Generated subgoals:

1   s(x)  A
1 step

2 16. z : A
17. s(x) = z  A
  f(z,s(y),v)  x : A  y : B(x)?Void
7 steps

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

1	s(x) A	1 step
2	16. z : A 17. s(x) = z A f(z,s(y),v) x : A y : B(x)?Void	7 steps